Dynamic response analysis of a moored crane-ship with a flexible boom

Abstract：The dynamic response of moored crane-ship is studied. Governing equations for the dynamic response of a crane-ship coupled with the pendulum motion of the payload are derived based on Lagranges equations. The boom is modeled based on finite element method, while the payload is modeled as a planar pendulum of point mass. The dynamic response was studied using numerical method. The calculation results show that the large-amplitude responses occur at wave periods near the natural period of the payload. Load swing angle is smaller for crane-ship with flexible boom, in comparison with rigid boom. The ship surge motions have large vibrations for crane-ship with flexible boom, which were not observed for a rigid boom. The an alysis identifies the significance of key parameters and reveals how the system design can be adjusted to avoid critical conditions. 作者： Author： Hui-li REN  Xue-lin WANG  Yu-jin HU  Cheng-gang LI 作者單位： School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China 期 刊： 浙江大學(xué)學(xué)報(bào)A（英文版）   ISTICEISCI Journal： JOURNAL OF ZHEJIANG UNIVERSITY SCIENCE A 年，卷(期)： 2008, 9(1) 分類號(hào)： U615.35 Keywords： Dynamic response    Moored crane-ship    Finite element method    Rigid-flexible coupling dynamic model    機(jī)標(biāo)分類號(hào)： TP3 R85 機(jī)標(biāo)關(guān)鍵詞： dynamic response    finite element method    numerical method    system design 基金項(xiàng)目： 國(guó)家自然科學(xué)基金，教育部高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金

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